Printing-plate-shaving machine.



APPLICATION FILED JULY ZI. 1909.

Patented Jan.'16,1917.

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H. M. BARBER.

PRINTING PLATE SHAVING MACHINE.

APPLICATION FILED ILY 21| I909.

Patented Ja:r1.16,1 917.`

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PRINTING PLATE sHAvING MACHINE.

APPLICATION FILED IULYZI, |909.

Patented Jan. 16, 1917.

5 SHEETS-SHEET 3.

Y H. M.. BARBER. l

PRINTING PLATE SHAVING MACHINE.

APPLICATION FILED JULY 2T, |909.

Patented Jan. 16, 1917.

5 SHEETS-SHEET 4.

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H. IVI. BARBER.

PRINTING PLATE SHAVIN!)` MACHINE APPLICATION FILED .LULY 2l, |909- Patented Jan. 16,1917.

5 SHEETS-SHEET 5.

UNITED sTATEs PATENT oEEIoE.

HOWARD M. BARBER, OF STONINGTON, CONNECTICUT, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO C. B. COTTRELL & SONS COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

PRINTING-PLATE-SHAVING MACHINE.

Specification of Letterslatent.

Patented Jan. 16, 1917.

Application med July 21, 1909. serial No. 508,866.

Stonington, in the county of New London and State of Connecticut, have invented new and useful Improvements in Printing-Plate- Shaving Machines, of which the following is a specification.

This invention relates to improvements` in printing plate Shaving machines and has for one of its objects to provide a machine of this character in which abrake for thereciprocating bedand the motor are both under the control of the movements of the bed whereby the brake is applied and the motor stopped automatically at the rearward and forward limits of movement of the bed.

A further object is toprovide means for automatically raising the knife carrying head as the bed reachesthe limit of its rearward movement and for automaticallyA lowering the head as the bed reaches the ylimit of its forward movement.

A further object isrto provide manually operated means for raising the knife carrying head and for stopping the motor at any desired point in the rearward movement of the reciprocating bed.

A further obj ect is to provide certain novel features in the construction, formand arrangement of the several parts whereby all lost motion is obviated in the knife carrying head thus insuring a shaving of the printing plate with the utmost accuracy.

In the accompanyingdrawings, Figure 1 represents the shaving machine inside elevation, the several parts being shown in full lines in the position which they assume when the machine is at restwith the reciprocating l for stopping the reciprocating bed at the bed at the limit of its forward movement and in dotted lines when the reciprocating bed is at the. limit of its rearward movement, Fig. 2 is a top pla-n view of the same, Fig.3 is a front end View of the machine, Fig. 4 is a detail view showing more clearly the brake limits of its movement, Fig. 5 is a section taken in the plane of the line A-A of Fig. 4, looking in the direction of the arrows,

Fig. G is an enlarged detail longitudinal vertical section, Fig. 7 is a detail transverse section through a portion of the machine showing one of the plate pressure rolls, Fig. 8 is a fragmentary horizontal section taken in the plane of the line B-.B of Fig. 6, looking in the direction of the arrows, Fig. 9 is a detail vtransverse section taken in the plane of the line C-C of Fig. 6, looking in the direction of the arrows, and Fig. 10 is a detail plan view'partially in section showing the connections for automatically applying the brake Vto ylimit the backward and forward movements of the bed.

VThe bed frame ofthe machine is denoted by 1 and its supporting legs by; 2. The bed 'frame is provided with ways 8, for guiding the reciprocating bed 4 in its forward and rearward movements. TheV reciprocating 'bed' 4 is provided with 'a rack 5, which rack-is engaged by a reversing pinion 6 i'iXed to a cross shaft'7 suitably mounted in the bed frame 1. This cross shaft 7 is driven by a wormy andy gear' connection 8, 9,' from a drive shaft 10, which shaft is in turn driven from anysuitable source of-power such, for instance, as a reversingv motor 11, Aby a belt and pulley connection '12, 13, 1'4.

Amotor controlling lever 15 is fixed to a cross rock shaft 161suppo'rted vby suitable hangers 17 from longitudinal tie rods 18 carried by the legs 2 of the framing. The motorv controlling lever 15 Vis yarranged to control the directionl of movement of the motor'shaft 19through a controller 2O of any suitable design, the pinion 21 of which controller meshes with the teeth of a rack bar 22 connected tothe lever 15.

It is to be understood that in the arrangement of the parts as herein shown, when the lever is swungy forwardly the/,motor shaft will be driven in a direction to causeI the reversing pinion 6 to drive the reciprocating bed rearwardly; when the lever is moved rearwardly the motor shaft will be driven inthe reverse direction to cause the pinion 6 to drive the `bed forwardly, and when the lever is in its intermediate position the con- 24 is provided for by means of vertical adjusting screws 29, 30, rotatably mounted in` the knife carrying head 27, which screws pass through interiorly threaded lugs 31, 32, projecting through vertically elongated recesses 33, 34, in the knife carrying head 27. Coil springs 35, 36, surround the lscrews 29, 30, and are interposed between the bottoms of the recesses 33, 34, and the lugs 31, 32, respectively, for eliminating all lost motion between the said lugs and screws. These screws 29, 30, are provided with spur gears 37, 38, which mesh with a spur gear 39 fixed to the shaft 40 of a hand wheel 41 mounted on the knife carrying head 27.

A micrometer adjustment of the knife carrying member 24 is provided for through a worm'42 carried'by a horizontal hand yshaft 43 'mounted on the knife carrying head 27, whichworm may be moved into and out of meshwith a worm gear 44 fixed on the shaft of the handwheel 41. In the present instance, a hand lever 45 is provided for this purpose.

tical slots 50, 51, are provided through the rear wall of the recesses 33, 34, into which the rear endsof, the lugs 31, 32, extend.

The knife carrying headV 27 is moved toward and away from the traveling Vbed by the following means z-Axrock shaft 52 is mounted in the bed frame 1 and beyond the bed frame upon both sides of the machine the shaft is provided with eccentric portions 53, 5 4, journaled in boxes 55, 56, which rest upon the horizontal bottom walls of `the loops 57, 58, of frames 59, 60, secured to the opposite ends of the knife carrying head 27 as, for instance, by screw bolts 61, 62. The lower ends of these loop frames 59, 60, are guided by pins 63, 64, supported in brackets 65, 66, projecting Vfrom the vbed frame 1. Thevknife carrying head 27 is pressed upwardly under the strong tension vof springs 67, 68, which also serve to hold the horizon- .tal bottom walls-of the loops 57, 58, of the .carrying head at any time in the rearward movement of the bed, is fixed to a concentric pin extending outwardly from the eccentric portion 54 Vof the shaft 52.

The means for automatically controlling the raising and lowering of the knife carrying head by themovement of the reciprocating bed so that the shaving knife will be lowered before the bed starts on its rearward movement and raised before the bed starts on its forward movement, is constructed, and arranged as follows z-On the side of the machine upon which the levers 15 and 69 are located, the reciprocatingbed 4 is provided witha fixedl abutment 71 at its forward end and a longitudinally adjustable abutment 72 near its rear end, the adjustment of which abutment 72 is provided for in the present instance byl a removable pin 73 arranged to engage any one ofa series of holes 74 along the side of the reciprocating bed 4.

As the reciprocating bed 4 4approaches the limit of its rearward movement, the front abutment 71 will engagel the free end of an arm 75 mounted upon a stud shaft 76 carrried by the bed frame 1. Vhen' the reciprocating bed 4 approaches the limit of its lforward movement, the abutment 72 will engage an arm 77 carried by a hub 78 mounted upon a stud shaft 79. A link bar 80 connects the arms 75 and 77 so that these two arms are moved together.

The hub 7 8 isl further provided with an arm 81 which is connected to an arml 82 on the hub of the lever 69 by a connecting link 83 so that the shaft 52 is rocked by the rocking movement of the arms 75 and 77 for automaticallyv raising and lowering the knife carrying head.

Thelever 15 is connected to the arm 75 by a lost motion connecting link 84, which link has a pin' andV slot connection 85, 86, with the said lever 15. This lost motion connection between the controlling lever 15 and the arm 75 permits the operator to throw the controlling lever 15 into its neutral position at any time during the yrearward movement ofthe reciprocating bed 4 whenever the lever 69 is raised by hand for manually lifting the knife carrying head.

T he rearward and forward movements of the bed are stopped by al brake mechanism under the control of the bed as follows :HA bandk brake is located on the shaft 10, the brake drum being denoted by 87 and the brakeband 88. Y The Aband tightening Vlever is denoted by 89 and'it lis engaged by a double cam 90 carried by an arm 91 fixed to a cross rock shaft 92 mounted in the bed frame 1 at the rear end ofthe machine. This shaft 92 is provided with a depending arm 93 which is connected by a link rod 94 with an uprising arm 95 Xed to the rock shaft 16 upon which lthe controlling lever 15 is also fixed. Thislarm 95 islocated at the opposite side of the machine from the lever 15 and it is provided with a rearwardly extended bar 96 resting in suitable guides 97, 98, on the bed frame 1, along the side of the reciprocating bed 4. This bar 96 is provided with uprising lugs 99, 100.

The reciprocating bed 4 is provided with a front fixed abutment 101 corresponding to the abutment 71 and a longitudinally adjustable rear abutment 102 corresponding to the abutment 72. This rear abutment 102 is shown as a pin which may be inserted through any oneof a series of holes 103 located along the side of the reciprocating bed 4. These abutments 101, 102, are so placed that they will engage the uprising lugs 99, 100, respectively, of the rearwardly extended bar 96 for moving the several arms and lever to apply the brake to stop the movement of the bed and for throwing the controlling lever 15'into its neutral position to stop the operation of the motor, as will hereinafter appear in descriptions of the operation of the machine.

Suitable spring pressed rollers 104, 105, are arranged to the front and rear of the cutting edge of the shaving knife 23 in position to exert their pressure upon the back of the printing plate being shaved. Each of these rollers 104, 105, is provided with Shanks 106, 107, extending upwardly through the knife carrying member 24, springs 108, 109being provided for yieldingly holding the rollers at the limit of their downward movement and adjusting nuts 110, 111, being provided for adjustably limiting the downward movement of the said rollers.

The downward movement of the knife carrying head 27 is limited by vertically adjustable bolts 112 which have screw threaded engagements with lugs 113, on lthe uprising sides 28 of the bed frame 1, the heads of which bolts are adjusted into position to be engaged by the under side of a rearwardly extended shelf 114 of the knife carrying head as the head reaches approximately its lowest position, thus rigidly supporting the head in its lowered position during the shaving operation. Lock nuts 115 on the bolts 112 serve to lock the bolts in their proper adjusted position with respect to the knife carrying head.

In operation, supposing the parts to be in the position shown in full lines, Fig. 1, with the reciprocating bed at the limit of its forward movement, the controlling lever 15 in its neutraly position and the band brake applied and the motor at rest: Thecontrolling lever 15 is swung forwardly into the position indicated by the line X-`X, Fig. 1, the slot 86 in the link-bar 84 permitting thelever 15 to be swung into this position without affecting the knife carrying head operating mechanism. v ThisV forward movement of the lever 15 will release into position to apply the brake.

derneath the shaving knife and as it approaches the limit of its rearward movement, its abutment 101 will engage the lug 99 of the bar 96 thus rocking the arm 95 in a direction to move the cam 90 into position toapply the brake 87, 88, 89. This same .rocking movement of the arm 95 will rock .the shaft 16 a suiicient distance to swing the controlling lever 15 rearwardly into its neutral position,`thus stopping the motor.

Furthermore, as the reciprocating bed nears the limit of its rearward movement, the front stop 71 thereon will engage t-he arm 75 and move it rearwardly a sufficient distance to rock the shaft 52 for causing its eccentric portions 53, 54, to move upwardly to Vpermit the springs 67, 68, to lift the knife carrying head 27 away from the reciprocating bed 4. If, at any time during the rearward movement of the bed 4, it is desired to stop the shaving operation, the lever 69 can be raised by hand thus permitting the spring 67, 68, to lift the knife carrying head and through the link connection 84 swing the controllinglever 15 into its intermediate position to stop the motor. After the reciprocating bed reaches the limit of its rearward movement and the knife carrying head is raised, the controlling lever 15 may be moved rearwardly into the position indicated bythe line Y-Yof Fig. 1, thus releasing the brake and reversin the motor. As the bed approaches the limit of its forward movement, the abutment 102 will engage the lug 100 ofthe bar 96 and swing the uprising arm 95 forwardly a sufficient distance to move the double faced cam 90 This movement of thev arm 95 will also vrock the shaft 16 a sufficient distance toA move the controlling lever 15 into its intermediate position, thus stopping the motor.

By the construction, 'form and arrangement of the several parts, asherein shown and described, it will be seen that by providing a lpositive limit for the downward movement ofthe knife carryingheadand providing springs for raising the same, the

head will be held rigidly against movement when in its lowered position during the shaving operation, thus permitting the adjustment of the knife carrying member with the utmost accuracy.

Furthermore, by providing the springs 35, 36, around the adjusting screws 29, 30, all lost motion is taken up at this point and a micrometer adjustment of the knife carrying member may be obtained after an approximate adjustment thereof has been obtained. l

It will furthermore be seen that. both-an automatic means is provided for raising the knife 'carrying head and a manually 'operated means is provided forv obtaining this movement. j Y

Parts' of the mechanism' shown and de-Y scribed but'notclaime'd herein relating more' Yparticularly totheknife carrying head and its operating devices, form the siibject'matter' of a' divisionalapplication filed by Vme on the 31st day' of October, 1910,'"its 'serial' number` being 589995.

i What I claimA is 'zl. InV a machine 'of' the "character i del' scribed, a knife carrying head, head'ra'ising Yand lowering mechanism, a reciprocating bed, a brake'therefor, brake applying mechanism 'and a"comm'on manually operated' lever connected to both the head raising and lowering,'.niechanism and' the 'brake' ap'plying mechanism' fo'r operating'them.-

'In' a 'machine of the'character described,A a'knife carrying head, 'head Vraising-IV and lowering Vmechanism, a reciprocating bed, a brake therefoig'lbrak'e applying ine'ch'- anism, means controlled by the bed: forI automatically operating' the brake 'applying' mechanism as the bed reaches predetermined matically operating the "head: raising and" 'lowering mechanism and the brake applying mechanism as the bed reaches 'predetermined points'in its reciprocatory movements, land' a .manually operated lever connected to the brake applyingmechanism.

4l. In' a machine of the l'characte'r described, a' knife carrying head, headiraising and lowering mechanism, reciprocating bed, a brake therefor, brake applying mechanism, means controlled by the bed for` opf erating the head'raisin'g and lowering mechanism and the'brake applying mechanism as the bed reaches predeterminedv points in its'reciprocatory movements anda manually operated lever connected to the headv rais;

ing andlowering mechanismV andtothe braken applying mechanism. l

y5'. In' a machine `of thercharacter` de-v scribed, aknife carrying head, head raising and lowering mechanism',l a reciprocating bed,a motorl forv driving it, and means controlled bythe bed for automatically operating the` 'head raising and' lowering mecha" nism and" stoppingr the motor as'the Vbed reaches predetermined points in' its reciprocatory 'movements r Y Y 6. Ing a machine of the Vcharacterl derscribed, a knife kcarrying head, head raising and lowering mechanism, a reciprocating pleasure. l

faire@ bed, a motor' for driving it,m'eans vcontrolled by? the''be'd for automatically operating the head'V 'raising 'and lowering mechanism andv A for stopping the motor as vthe'bed: reaches Vi'ngand lowering'mechanism, areciprocating be'd, avin'otor for Vdriving it, and means controlledby the b'ed forV automatically operating the head raising andlowering mechanism and stopping'the in'otoras'the bed reaches predetei'imined points in its reciprocatory movements,- anda manually operated device 'for 'stopping the motor aty pleasure.

8. In a machine of theV 'character described, a knife cai'ryinghead, head raising and lowering mechanisrm 'a' reciprocating bed, a motor for driving it, means controlled. by the bed foi" automatically operating the head raising and lowering mechanism and stopping the ,motor 'asthebed reaches predetermined points in f its reoiprocatory movements and a manually' operated device for operating thelV head raising and' lowering mechanism and for stopping the motorat '9; Ini a machine of the character 'described, a knife carrying head, a'reciprocating"bed, a brake therefor, vbrake applying mechanism, drivingmeans for' the bed, a driving'mea'ns controlling lever vand'mea'ns controlled by the bed connected to'the'brake applying mechanism-and thedriving means controlling lever fori'a'pplying 'the' brake and stopping' theV driving means as kthe bedy reaches predetermined points inits reciprocatory movements'.

` 10; In a machine Vof the, cha'i'act'errv described, Va knife carrying head,a i'eciprocatingr bed, a brake therefor, brakeV applying mechanism, driving means for tlielbed, a driving-'means controlling lever,' mean's controlledby the bed connected'to 'the 'brake ya'pplyingmechanismv and the Vdriving. means controlling 'lever for applying the' 'brake and stopping "the driving'inea'ns as the 'bed reaches predetermined points 'in its' reciprocatory movements Vandy a manually operated device connected to o the brakev applying mechanism. l

11. In' a machine ofthe' character described, a knife carrying head, a 'reciprocating bed,'a brake therefor', brake applying mechanism, driving means 'f'or'th'ey bed, a driving means controlling.lever,means controlled 'by' the vbed 'connected togth'e brake Vapplying mechanism `and 'the vdriving means controlling lever Vfor applying `the brake andv stopping' the driving means as the bed reaches predetermined p'ointsin 'its' reciproiis catory movements, and a manually operated device connected to the driving means controlling lever.

12. In a machine of the character described, a knife carrying head, a reciprocating bed, a brake therefor, brake applying mechanism, driving means for the bed, a driving means controlling lever, means controlled by the bed connected to the brake applying mechanism and the driving means controlling lever for applying the brake and stopping the driving means as the bed reaches predetermined points in its reciprocatory movements, and a manually operated device connected to the brake applying mechanism and to the driving means controlling lever.

13. In a machine of the character described, a knife carrying head, head raising and lowering mechanism, a reciprocating bed, a brake therefor, brake applying mechanism, driving means for the bed, a driving means controlling lever and means controlled by the bed connected to the head raising and lowering mechanism, the brake applying mechanism and the driving means controlling lever for operating the several parts as the bed reaches predetermined points in its reciprocatory movements.

14. In a machine of the character described, a knife carrying head, head raising and lowering mechanism, a reciprocating bed, a brake therefor, brake applying mechanism, driving means for the bed, a driving means controlling lever, means controlled by the bed connected to the head raising and lowering mechanism` the brake applying mechanism and the driving means controlling lever for operating the several parts as the bed reaches predetermined points in its reciprocatory movements and a manually operated device connected to the head raising and lowering mechanism, the brake applying mechanism and the driving means controlling lever for operating the said parts at pleasure.

15. In a machine of the character described, a knife carrying head, a reciprocating bed, means for driving the bed in either direction, a driving means controlling lever, a brake for the bed and means controlled by the bed for automatically bringing the controlling lever into its neutral position to stop the driving means and for applying the brake as the bed reaches predetermined points in its rearward and forward movements.

when the lmife carrying head is manually Y raised.

17. In a machine of the character described, a lmife carrying head, a reciprocating bed, means for driving the bed in eitherV direction, a driving means controlling lever, means controlled by the bed for automatically bringing the controlling lever into its neutral position to stop the driving means and for raising and lowering the head as the bed reaches predetermined points in its rearward and forward movements and a manually controlled lever for raising and lowering the head, said lever having a lost motion connection with the driving means controlling lever for bringing the controlling lever into its neutral position when the head is manually raised.

18. In a machine of the character described, a knife carrying head, a reciprocating bed, a brake therefor, means for driving the bed in either direction, a driving meanscontrolling lever, means controlled by the bed for automatically bringing the controlling lever into its neutral position to stop the driving means, for applying the brake and for raising and lowering the head as the bed reaches predetermined points in its rearward and forward movements and a manually controlled lever for raising and lowering the head, said lever having a lost motion connection with the driving means controlling lever for bringing it into its neutral position as the head is manually raised.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two witnesses, this nineteenth day of July, A. D. 1909.

HOWARD M. BARBER. i

Witnesses:

A. R. STILLMAN, G. BURDECK.

Copies o! this patent may be obtained for ve cents each, by addressing the Commissioner o! Patents.

Wumnztomnc. 

